Community Wet II, Руководство по эксплуатации и установке

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Community WET II - Operation and Installation Manual - Page 32
TROUBLESHOOTING GUIDE
Should you have a problem with your WET II loudspeaker(s), find the symptom and follow the associated
“What To Do” instructions below. Be aware that a particular symptom may have several possible causes.
SYMPTOM PROBABLE CAUSE WHAT TO DO
High distortion, low
output, or no output
from any or all
drivers. Faulty connection to the
loudspeaker.
Possible solder joint
failure on crossover
card. Using an ohmmeter, check the continuity of the wiring to the
loudspeaker. If the wiring is OK, remove the input panel and
check all solder joints on the crossover and the wiring to the
drivers. Visually inspect solder joints as cold joints may only
malfunction under high current. Repair as needed.
Distortion from the
loudspeaker at higher
volume levels. Too little amplifier
power. If the power rating of the amplifier is too low, it will clip at
higher volume levels. Reduce the volume level or use a more
powerful amplifier.
Distortion from the
loudspeaker at
moderate to high
volume levels. Driver is malfunctioning. Using a sine wave oscillator or wide range program at
moderate levels, listen to each driver to isolate the problem.
Replace as needed.
Low or no output
from the low
frequency driver. Low frequency driver,
crossover, or amplifier is
malfunctioning. Test and replace as needed.
Low or no output
from the mid and
high frequency
drivers. Mid frequency driver,
crossover, or amplifier is
malfunctioning. Test and replace as needed.
Low or no output
from the high-
frequency driver. High frequency driver,
crossover, or amplifier is
malfunctioning. Test and replace as needed.
Low volume level. System gain is too low. Check to make sure that the audio signal to the amplifier is
high enough to drive it properly. Check all volume/level
controls and gain switches in the system including the
amplifier input attenuator.
Low volume level. Signal or speaker wire
connection is shorted. Make sure the signal and input wire connections inside all
system connectors are not shorted or open. Even one small
wire strand shorting the +/– signal terminals together
anywhere in the system can cause this problem.
No sound. Amplifier is not on or
loudspeaker is
disconnected. Check that amplifier is turned on and that loudspeaker is
properly connected to the amplifier.
No sound or very low
volume. No audio signal. Check that all the audio equipment in the signal chain is
powered on and that all gain controls are in the proper
position.
Noises from the
loudspeaker (buzzes
or rattles). Grille or hardware is
loose. Make sure the front grille screws are securely seated and
that any external mounting hardware is tightened or secured
from vibrating.
Noises from the
loudspeaker (buzzes
or rattles). Driver is malfunctioning. Using a sine wave oscillator or wide range program at
moderate levels, listen to each driver to isolate the problem.
Replace as needed.
Poor low frequency
response when used
with other units. Incorrect polarity
connections. Check the polarity to all units. Verify that polarity is correct
(+ and – amplifier outputs go to + and – on loudspeaker).
Incorrect polarity will result in low frequency cancellation.
Sound cuts in and
out. Bad connection. Check all connections and cabling for shorts or loose connections.
Even one small wire strand shorting the +/– signal terminals
anywhere in the system can cause this problem.